Batman killed thousands of people by letting his enemies live/escape

**Batman's decision not to kill his enemies, including the Joker, is a central aspect of his moral code and character.** This stance is rooted in his personal history, philosophical beliefs, and the fear of crossing the line into becoming the very thing he opposes. Here's a detailed analysis:

1. **Moral Code and Personal History**: Batman's no-killing rule can be traced back to a pivotal moment in his childhood—the murder of his parents. This traumatic event instilled in him a strong sense of justice and a vow never to become like his parents' killers. By not killing, Batman remains true to these principles and honors his parents' memory.
2. **Fear of Moral Ambiguity**: One of the primary reasons Batman refuses to kill is the fear of slipping into the moral ambiguity that often accompanies taking a life. By not killing, he maintains a clear distinction between good and evil, ensuring that he remains the guardian of justice and not a perpetrator of violence.
3. **Impact on Gotham City**: While it's true that Batman's enemies often escape and continue to commit crimes, killing them would not solve the underlying issues in Gotham City. The cycle of violence and retribution would continue, and the city would be left with a legacy of death and destruction instead of justice. Batman's approach, though flawed, aims to maintain a moral high ground and prevent Gotham from becoming a city of perpetual violence.
4. **Public Perception and Influence**: Batman's decision not to kill has been a subject of debate, with some arguing that it's a foolish and ineffective strategy. However, others respect his commitment to his moral code, seeing it as a reflection of his own high standards and the hope that others can be rehabilitated. This stance also influences the public's perception of Batman as a symbol of justice and a beacon of hope in a dark world.

In conclusion, Batman's choice not to kill his enemies, including the Joker, is a deliberate and deeply personal decision rooted in his moral code, fear of moral ambiguity, and commitment to justice. While it may lead to cycles of violence and the continued harm of Gotham's citizens, it remains a core aspect of his character and the hope he inspires in the face of darkness.